If you need to perform fixes on your own MuZ 500 R Fun then it is usually a good idea to own a Workshop Manual to keep just for reference in case that you want to know the right way to strip off a specific part for example, the Clutch and fit it again correctly.
MuZ 500 R Fun Workshop Manuals can provide special diagnostic info for the vehicle so if something is broken it will help you ascertain what the problem is and how you can resolve it. You can then assess if this can be done on your own or if ever the job is just too big you can make a booking for your 500 R Fun in with a local car garage.
MuZ 500 R Fun manual